diff mbox series

[v3,4/6] dt-bindings: net: sun7i-gmac: Add syscon support

Message ID 20200430115702.5768-5-plaes@plaes.org (mailing list archive)
State Not Applicable, archived
Headers show
Series ARM: sunxi: Clean up sun7i-a20-gmac-clk usage | expand

Commit Message

Priit Laes April 30, 2020, 11:57 a.m. UTC
Now that driver supports syscon-based regmap access, document also the
devicetree binding.

Signed-off-by: Priit Laes <plaes@plaes.org>
---
 .../bindings/net/allwinner,sun7i-a20-gmac.yaml    | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

Comments

Maxime Ripard April 30, 2020, 3 p.m. UTC | #1
On Thu, Apr 30, 2020 at 02:57:00PM +0300, Priit Laes wrote:
> Now that driver supports syscon-based regmap access, document also the
> devicetree binding.
> 
> Signed-off-by: Priit Laes <plaes@plaes.org>
> ---
>  .../bindings/net/allwinner,sun7i-a20-gmac.yaml    | 15 +++++++++++++--
>  1 file changed, 13 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/allwinner,sun7i-a20-gmac.yaml b/Documentation/devicetree/bindings/net/allwinner,sun7i-a20-gmac.yaml
> index 703d0d886884..c41d7c598c19 100644
> --- a/Documentation/devicetree/bindings/net/allwinner,sun7i-a20-gmac.yaml
> +++ b/Documentation/devicetree/bindings/net/allwinner,sun7i-a20-gmac.yaml
> @@ -29,17 +29,26 @@ properties:
>    clocks:
>      items:
>        - description: GMAC main clock
> +
> +      # Deprecated
>        - description: TX clock
>  
>    clock-names:
>      items:
>        - const: stmmaceth
> +
> +      # Deprecated
>        - const: allwinner_gmac_tx

That would be deprecated: true

Also, you still require to have two clocks here?

>  
>    phy-supply:
>      description:
>        PHY regulator
>  
> +  syscon:
> +    $ref: /schemas/types.yaml#definitions/phandle
> +    description:
> +      Phandle to the device containing the GMAC clock register
> +
>  required:
>    - compatible
>    - reg
> @@ -48,6 +57,7 @@ required:
>    - clocks
>    - clock-names
>    - phy-mode
> +  - syscon

You can't do that though, this changes the binding in a non-backward compatible
way

I guess you could add an if clause to require it if clocks has a single member.

Maxime
Rob Herring (Arm) May 1, 2020, 9:12 p.m. UTC | #2
On Thu, 30 Apr 2020 14:57:00 +0300, Priit Laes wrote:
> Now that driver supports syscon-based regmap access, document also the
> devicetree binding.
> 
> Signed-off-by: Priit Laes <plaes@plaes.org>
> ---
>  .../bindings/net/allwinner,sun7i-a20-gmac.yaml    | 15 +++++++++++++--
>  1 file changed, 13 insertions(+), 2 deletions(-)
> 

My bot found errors running 'make dt_binding_check' on your patch:

/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/net/allwinner,sun7i-a20-gmac.example.dt.yaml: ethernet@1c50000: clock-names: ['stmmaceth'] is too short
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/net/allwinner,sun7i-a20-gmac.example.dt.yaml: ethernet@1c50000: clocks: [[4294967295, 49]] is too short

See https://patchwork.ozlabs.org/patch/1280292

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure dt-schema is up to date:

pip3 install git+https://github.com/devicetree-org/dt-schema.git@master --upgrade

Please check and re-submit.
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/net/allwinner,sun7i-a20-gmac.yaml b/Documentation/devicetree/bindings/net/allwinner,sun7i-a20-gmac.yaml
index 703d0d886884..c41d7c598c19 100644
--- a/Documentation/devicetree/bindings/net/allwinner,sun7i-a20-gmac.yaml
+++ b/Documentation/devicetree/bindings/net/allwinner,sun7i-a20-gmac.yaml
@@ -29,17 +29,26 @@  properties:
   clocks:
     items:
       - description: GMAC main clock
+
+      # Deprecated
       - description: TX clock
 
   clock-names:
     items:
       - const: stmmaceth
+
+      # Deprecated
       - const: allwinner_gmac_tx
 
   phy-supply:
     description:
       PHY regulator
 
+  syscon:
+    $ref: /schemas/types.yaml#definitions/phandle
+    description:
+      Phandle to the device containing the GMAC clock register
+
 required:
   - compatible
   - reg
@@ -48,6 +57,7 @@  required:
   - clocks
   - clock-names
   - phy-mode
+  - syscon
 
 unevaluatedProperties: false
 
@@ -55,11 +65,12 @@  examples:
   - |
     gmac: ethernet@1c50000 {
         compatible = "allwinner,sun7i-a20-gmac";
+        syscon = <&syscon>;
         reg = <0x01c50000 0x10000>;
         interrupts = <0 85 1>;
         interrupt-names = "macirq";
-        clocks = <&ahb_gates 49>, <&gmac_tx>;
-        clock-names = "stmmaceth", "allwinner_gmac_tx";
+        clocks = <&ahb_gates 49>;
+        clock-names = "stmmaceth";
         phy-mode = "mii";
     };